Process for the dyeing or printing of textile materials made from polymers or copolymers of acrylonitrile

ABSTRACT

Process for the dyeing and printing of textile materials made from polymers or copolymers of acrylonitrile by using dyestuffs of the general formula   WHEREIN R1, R2, and R3 each stands for a hydrogen atom or an optionally substituted lower alkyl group, Z represents a carboxylic ester group, Q stands for an aromatic or heterocyclic radical bound or not bound to the benzene nucleus b, X represents an anion, and wherein each benzene nucleus a or b or the radical Q may optionally be substituted by non-ionic substituents, and which dyeings and prints show very clear and brilliant shades and have good fastness properties.

United States Patent [191 .Mundlos et al.

[ 1 Jan. 30, 1973 [54] PROCESS FOR THE DYEING OR PRINTING OF TEXTILE MATERIALS MADE FROM POLYMERS OR COPOLYMERS OF ACRYLONITRILE [75] Inventors: Eberhard Mundlos, Heusenstamm;

Reinhard Mohr; Konrad Lohe, both of Offenbach/Main, Germany 22 Filed: Jan.20, 1971 21 App1.No.: 108,220

[30] Foreign Application Priority Data Jan. 23, 1970 Germany ..P 20 02 916.7

[52] US. Cl ..8/177 AB, 260/336v [51] Int. Cl. ..D06p 3/70 [58] Field of Search ..8/177, 177 AB [56] References Cited FOREIGN PATENTS OR APPLICATIONS 528,351 3/1957 Belgium ..8/177 AB 535,419 1/1957 Canada ..8/177 AB 1,290,914 3/1969 Germany ..8/177 AB 85,885 3/1896 Germany 96,668 3/1898 Germany 139,727 3/1903 Germany Primary Examiner-George F. Lesmes Assistant Examiner-T. J. Herbert, Jr. Attorney-Connolly & Hutz [57] ABSTRACT Process for the dyeing and printing of textile materials made from polymers or copolymers of acrylonitrile by using dyestuffs of the general formula wherein R R and R each stands for a hydrogen atom or an optionally substituted lower alkyl group, Z represents acarboxylic ester group, O stands for an aromatic or heterocyclic radical bound or not bound to the benzene nucleus b, X represents an anion, and wherein each benzene nucleus a or b or the radical Q may optionally be substituted by non-ionic substituents, and which dyeings and prints show very clear and brilliant shades and have good fast'ness properties.

7 Claims, No Drawings PROCESS FOR THE DYEING OR PRINTING OF TEXTILE MATERIALS MADE FROM POLYMERS OR COPOLYMERS OF ACRYLONITRILE polymers or copolymers of acrylonitrile can be dyedand printed in fast shades when using dyestuffs of the general formula wherein R R and R being identical or different each represents a hydrogen atom or a lower alkyl group which may be substituted, Z stands for a carboxylic acid ester group, wherein the alkanol component preferably contains one to four carbon atoms, Q stands for an aromatic or heterocyclic radical which may be bound to the benzene nucleus b, X represents an anion, and wherein the benzene nuclei a and b as well as the radical Q may be further substituted by one or more non-ionic substituents.

The dyestuffs used in the process according to the present invention may be prepared by known methods, for example by condensing phthalic anhydride with a m-amino-phenol of the general formula ll wherein R R and a have the meanings given above, subsequently condensing the intermediate so obtained with a compoundof the general formula III it; QI I OH Ill Hal N b a \R2 wherein Hal represents a halogen atom and R R a and b have the above meaning, with an amine of the general formula V Q NH R, v

wherein Q and R have the meanings given above, subsequently esterifying the carboxylic acid group, or in condensing phthalic anhydride with a compound of the general formula III, subsequently condensing with a maminophenol of the general formula II and esterifying the carboxylic acid group.

Some of the dyestuffs used in the process of the present invention or preliminary products thereof are described in the French Pat. specification No. 295,472 and in the German Pat. specification Nos. 85,885, 96,668 and 139,727. The dyestuffs not yet described may be prepared by analogous methods.

The radical Q may be an aromatic radical, for example a benzene or naphthalene radical which may be fused with or bound to heterocyclic rings. Moreover, Q may also represent a heterocyclic ring system, for example a benzene, naphthalene, indole, benzthiazole, diphenylene oxide, quinoline, indazole or a benzimidazole radical, or the radical Q may be linked with the benzene radical b, forming a heterocyclic ring with b. The radical Q may furthermore contain nonionic substituents like the benzene nuclei a and b.

As non-ionic substituents in the benzene nuclei 0 and b and in the radical Q thereare considered for example halogen atoms, amino groups, monoor dialkylamino, arylamino, alkyl, alkoxy, aralkyl, aralkoxy, aryl, aryloxy, arylazo, carboxylic ester groups or optionally substituted carboxylic acid amide, cyano, nitro, hydroxy, trifluoromethyl, alkylsulfonyl, arylsulfonyl, acyloxy, acylamino, alkylsulfonylamino or arylsulfonylamino groups.

The anion X may be any desired simple or complex organic or inorganic anion, for example a radical of the sulfuric acid or semi-esters thereof, of an arylsulfonic acid, of a hydrohalic acid or of another acid, for example of the phosphoric, the acetic, oxalic, tartaric or of the lactic acid, or a chlorozincate radical.

The dyeing is carried out by treating the textile material in a neutral or acidic liquor, preferably in a liquor containing acetic acid or a mineral acid, if desired, in the presence of auxiliaries, and finishing the so-obtained dyeings in the usual manner. The material to be dyed is generally introduced into the dyebath at about 40 to 60 C and dyed at boiling temperature. Dyeing may also be carried out at a pressure above atmospheric pressure, above C.

For the printing of textile material made from polyacrylonitrile or its copolymers, the dyestuffs are applied together with the usual thickeners and optionally printing auxiliaries and fixed in the usual manner by steaming.

As textile materials there are considered fibers, threads, flocks or woven and knitted fabrics made from polymers of acrylonitrile or from copolymers of acrylonitrile with one or more other vinyl compounds, for example vinyl chloride, vinyl fluoride, vinylidene chloride, vinyl acetate, vinyl propionate, vinyl pyridine, vinyl imidazole, vinyl pyrrolidone, vinyl alcohol, acrylic or methacrylic acid esters or acrylic amides.

EXAMPLE 1 100 g of a pre-cleaned polyacrylonitrile staple fiber yarn were introduced into a dyebath heated to about 60 C, which contained 1 g of crystallized sodium acetate and g of calcined sodium sulfate in 3 liters of water; the liquor was allowed to circulate for about minutes and then, at 60 C, a solution of l g of the dyestuff having the formula /N NH- e W 5 2 CH; H5049 COOCHa and 3 cc. of a 60 percent acetic acid in l liter of water was added. Subsequently, the bath temperature was raised relatively quickly up to 85 C, then slowly to 100 C, in the latter operation the temperature being increased by 1 C during 3 to 4 minutes. When the boiling temperature was reached, the yarn was dyed for 1 1.5 hours, whereupon the bath was nearly completely exhausted. Then the dyebath was cooled to about 70 C, the dyed goods were rinsed hot and cold and dried.

A clear bluish violet dyeing was obtained having very good fastnesses to light and wet processing.

were stirred with 15 cc. of a percent acetic acid to a paste and dissolved in 1 liter of boiling water. This solution was poured into a dyebath which contained, in-5 liter of water heated to 60 C, 1.2 g of a dispersing agent of the alkylaryl polyglycol ether type, 5 g of crystallized sodium acetate and 50 g of anhydrous sodium sulfate.

Subsequently a cross-wound bobbin consisting of 500 g of a pre-cleaned staple fiber yarn made from polyacrylonitrile was introduced into the dyebath, the temperature was raised to C at alternating circulation of liquor and then slowly up to C. The direction of liquor being alternating dyeing was ef fected for 1 l ,5 hours, whereupon the bath was exhausted. Subsequently the bath was cooled to about 70 C, the dyed material was rinsed hot and cold and dried.

A clear bluish violet dyeing was obtained exhibiting very good fastnesses to light and wet processing.

EXAMPLE 3 20 g of the dyestuff having the formula em... WC.) ..A w

HSCQ \g/ HSO49 COUCH:

were dissolved hot with 50 g of B,B-dihydroxy-diethyl sulfide, 30 g of cyclohexanol, 25 g of a 60 percent acetic acid and 425 g of water, and the solution was stirred into 450 g of a crystal gum thickener of a ratio of 1:2.

Polyacrylonitrile fabric was printed with this paste,

EXAMPLE 2 dried, steamed for 7% hour at 0.2 atmospheres excess 5 g of the dyestuff of the formula 40 pressure and subsequently rinsed. Then the fabric was H 0, soaped at 50 C with 1 g of a condensation product of H5049 oleic acid and methyltaurine per liter of water, rinsed U502/ 63 and dried.

\ A reddish dark blue print showing very good fast- 45 nesses to light and wet processing was obtained.

- OOCH: The following Table lists further dyestuffs which may be used in the process according to the'present invention, and the shades obtainable on polyacrylonitrile fibers:

'Dyestufi Shade \N /O\ NH H804 Red violet. 2 5

CO0CHa 02m nso. Do.

-COOCH:4

Dyestufi Shade CH3 NH H5046 Bluish red.

c 0 CH3 I /O\ 11804 Bluish violet.

NCH2CH2CII2NH NII OCzIIs I ea on; I

COOCH:

We claim:

1. A process for the dyeing or printing of textile materials made from polymers of acrylonitrile wherein the dyestuffs have the general formula in which R R and R which may be the same or different each represents a hydrogen atom or a lower alkyl group unsubstituted or substituted, Z represents a carboxylic acid ester group, O stands for an aromatic or heterocyclic radical bound or not bound to the benzene nucleus b, X represents an anion, and wherein one or both of' the benzene nuclei a and/or the nucleus b and/or the radical Q are unsubstituted or substituted by one or more hydroxy, amino, alkyl, alkoxy, aryloxy,

'arylamino, phenyl, carboxylic acid lower alkyl ester radical or halogen atoms.

2. A process as claimed in claim 1, wherein dyestuffs have the general formula I, and R R and R which may be the same or different each represents a hydrogen atom or an alkyl group containing of from one to four carbon atoms, Z represents a carboxylic acid ester group, the alkanol component of which optionally containing an alkoxy group, has from one to four carbon atoms, 0 stands for a phenyl, naphthyl, benzthiazolyl, benzimidazolyl, indolyl or for an indazolyl radical which may be condensed to the benzene nucleus b in order to form a N-heterocyclic ring, and which are unsubstituted or substituted by one or two chlorine atoms or by one or two lower alkoxy, lower alkyl, hydroxy, amino, phenoxy, phenylamino or carboxylic acid methyl ester radicals, and X represents an anion.

3. A process as claimed in claim 1, wherein said 4. A process as claimed in claim 1, wherein said dyestuff has the formula 5. A process as claimed in claim 1, wherein said dyestuff has the formula o v N- MIG-0cm can 13 l4 6. A process as claimed in claim 1, wherein said 7. A process as claimed in claim 1, wherein said dyestuff has the formula dyestuff has the formula m C1115 2 c1 c 1 usoie 

1. A process for the dyeing or printing of textile materials made from polymers of acrylonitrile wherein the dyestuffs have the general formula
 2. A process as claimed in claim 1, wherein dyestuffs have the general formula I, and R1, R2 and R3 which may be the same or different each represents a hydrogen atom or an alkyl group containing of from one to four carbon atoms, Z represents a carboxylic acid ester group, the alkanol component of which optionally containing an alkoxy group, has from one to four carbon atoms, Q stands for a phenyl, naphthyl, benzthiazolyl, benzimidazolyl, indolyl or for an indazolyl radical which may be condensed to the benzene nucleus b in order to form a N-heterocyclic ring, and which are unsubstituted or substituted by one or two chlorine atoms or by one or two lower alkoxy, lower alkyl, hydroxy, amino, phenoxy, phenylamino or carboxylic acid methyl ester radicals, and X represents an anion.
 3. A process as claimed in claim 1, wherein said dyestuff has the formula
 4. A process as claimed in claim 1, wherein said dyestuff has the formula
 5. A process as claimed in claim 1, wherein said dyestuff has the formula
 6. A process as claimed in claim 1, wherein said dyestuff has the formula 